MAKING
1. In a food processor or blender, take lemon juice, egg yolk, garlic cloves, mustard, cayenne pepper and salt. Blend it well.
2. While the processor is still on, pour oil through the feed tube.
3. Add yoghurt and blend it well.

SERVING
4. To serve Cold Poached Fish With Aioli, bake or broil fish until it becomes translucent and flesh parts easily with a fork.